Compensating controller for timepieces.



2;. 895,172. v PATENTED AUG; 4, 1908.

' P. EGAUBERT.

SATING C'ONTROLLER'FOB. TIMEPIECES.

OOMPEN APPLIGATION FILED FEB. 16, 1906. RENEWED DEC. 27, 1901.

2 SHEETSSHBET 1.

fliTENTEMEGAJQOB.

No. 895,172. I

. Y P. EGAUBBRT. GOMPENSATING. CONTROLLER FDR TIMBPIEGES. I APPLIUATIOH FILED FEB. 16, 1906. RENEWED DEC. 27, 190"].

rannnmc ECAUBERT, on NEW Yo-Rx, N. Y.

Specification of Letters Patentr COhiPENSATING CONTROLLER FOR THKEPIECES.

Patented Aug. 4, 1 908.

Application filed Februarylfi, 1906, Serial No. 301,374. Renewed December 21, 1907. Serial No. 408,266.

To (11110710777, it mayv concern:

Be it known that I, Fnnnnnro EGAUBERT, of the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Compensating Escapement- Regulators, of which the following is a specification.

The present invention relates to escapement regulators for time pieces and has more particularly reference to means for compensating for temperature-induced variations in the-size of the regulator.

Compensating regulators or balance wheels have long been known in the art but great difficulty has always been experienced in obtaining enough compensation, and furthermore in obtaining the exact amount of compensation needed.

The ob'ect of the present invention is to simplify the structure heretofore used to the end that the more advantageous disposition of the parts composing the escapement regulator will result in effecting the proper amount of compensation needed.

Accordingly the invention consists of an escapement regulator composedof a member having a low co-efiicient of expansion and provided with two resistant supports, and a yielding member having a high co-eflicient of expansion interposed between the said two resistant supports in such a manner that the said resistant supports will move only within the limit of movement of their own inherent expansion and contraction and whereby the resistance of the two supports will cause the yielding member by the latters own expansion or contraction to move in a predetermined path to compensate for temperature-induced variations in size of the regulator.

hen the invention is applied to a balance wheel the member having a low cc-etiicient of ex )ansion will take the form of a hub portion aving a plurality of resistant spokes arranged symmetrically with reference to each other and with reference to the center of oscillation, While the yielding member of a high co-ellicient of expansionwill be interposed between the outer ends of each pair of neighboring spokes and will preferably consist of a bar having a normal flex toward the center of oscillation.

In the accompanying drawings the invention is embodied in several concrete forms,

one of which isa preferred form. It is to be I understood, however, that variations may be made from the forms shown without departing from the legitimate and intended $00 )0 of the invention. r

n the said drawings :.Figures,1 2, 3, and 3 are once w ieels embodying'the invention. Fig. 4 is a side elevation of the construction shown in Fig. 1. Figs. 5, 6, and 7 are detail views of certain parts shown in Figs. 1 and 4. Fig. '8 is a view partly in section of a pendulum embodying the invention. Figs. 9 and 10 show modified forms of the same invention when applied to a/pendulum. Figs. 11 and 12 are sectional views respectively on the line :r-w of Fig. 9 and y'y of Fig. 10.

Referring to Figs. 1,3, 4, 5, 6, and 7: 0 represents the arbor of the wheel. The member having a low co-eilicient of expansion consists of the spokes b symmetrically arranged with reference to the center lan views of different forms of bal- I of oscillation and with reference to each' other and are connected by a central hub portion'as shown. Interposed between the outer ends of each pair of neighboring spokes is a yielding member having a higi c0- efiicient of expansion. this member is'denotedby d and as shown has a normal flex toward the center of oscillation so that when it expandsit will always move in a )redetermined ath. Connected to this yielding member is a weight d v 0 indicates the spiral hair spring.

In Figs. 5, 6, and 7 are shown in detail the particular means here used to connect the spokes and yielding members. The spokes are cut away at 2 to receive a strip. of metal forming a 'art of the yielding member. The said yielding member being likewise cut away at 3 to receive the spoke.

In Fig. 3 the yielding member is in the form of a bar a seated between adjacent spokes and provided with the attenuated portions 0 which not after the fashion of pivotjoints.. Each bar carries a weight a between each pair of adjacent spokes.

It will be seen that by the arrangement disclosed the resistant spokes will move only within the limit of movement of their own inherent expansion and contraction and that the resistance of the said two spokes will cause the yielding member by the latters own expansion or contraction to move in a In Figs. 1 and 4.

ioo

-where it supports the weight f.

predetermined path to compensate for by b and the yielding member by e. In

this instance the said yielding member has a normal flex away from the center of oscillation but is provided with the-arm f extending beyond the center of oscillation Thus an outward movement of. the yielding member will cause theweight to approach the center of oscillation, and the same result is obtained as with the previously described forms. v

In Fig. 3 the resistant spokes are denoted by t and the yielding member 9 here consists of two strips of material as shown, the inner strip being )referably of brass and relatively thick while the outer strip is preferably of steel and comparativelythin. This yielding member is movably connected to the resistant spokes by means of the pivots 4.

g indicates the weight.

In Fig. 8 the member having a low coeflieient of expansion takes the form of the central tube h which preferably forms a part of the pendulum rod.

'2' and '5 indicate two expansible members having a high co-efllcient of expansion interposed between two points of support of the member h by means of rivets 5 and the bolt 6. The lower end of the tube member h is contracted to form a guide for the rod 7c carrying the weight k. At the end of this rod is a pulley 9. A cord 8 passes beneath the pulley 9 and upwardly over the pulleys 7 mounted on the tubular member h, the ends of said cord passing from pulleys 7 to the middle ortions of the members 2', and i with whic1 they are connected. An increase in temperature would expand the members '11 and i more than the member h and hence would cause the said members i and i to lift the weight I: thereby compensating for the increase in length of the pendulum rod.

In Figs. '9 and 11 the member having a low co-efficient of expansion takes the form of a bar Z carried by the pendulum rod h.

m and n indicate the expansible member which in this instance is made yielding by means of pivots 'm, and m. At their outer ends the members m and a carry the weights m and 12. Here as in the other instances the yielding member is interposed between two resistant sup orts.

In Figs. 10 an 12 the member having a low co-eliicient of expansion is indicated by the resistant bar 1- while the yielding member is indicated by the two elliptical expa'nsible bars 0 and'o interposed between two points of resistant supports of the resistant bar '1'. The bar 0 is provided with a weights and. the whole device carried by the pendulum-rod h.

I hat is claimed is y 1. In an escapement regulator, a member having a low eo-eflicient of expansion and provided with two resistant supports, a yildmgmember havinga high co-efficient of expansion interposed between the said two resist'ant supports in such a manner that the said resistant supports will move only w thin the limit of movement of their own inherent expansion and contraction and whereby the resistance of the two supports will cause the yielding member by the atter's own expansion or contraction to move in a predetermined (path to compensate for temperatureinduce variations in size of the regulator.

2. In an escapement regulator, a member havin a low co-efficient of expansion and providedwith two resistant supports, a yielding member having a high co-eificientof expension interposed between the said two resistant supports in such a manner that the said resistant supports will'moveonly within the limit of inovement of their own Inherent expansion and contraction and whereby the resistance of the two sup )orts will cause the yielding member by the iatter's own expansion or contraction to move in a predetermined )ath to compensate for temperatureinduced variations in size of the regulator, and a weight carried by the yiel ding member.

3. In a balance wheel, a member having a low co-eliicient of expansion provided with a.

' )lurality of resistant spokes, a yielding memer having a high coeilicicnt of expansion interposed between each )air of neighboring spokes in such a manner t rat the said spokes will move only within the limit of movement of their own inherent expansion or contraction and wherebythe resistance of the said spokes will cause the yielding member by the latters own expansion or contraction to move in a predetermined path to co1npensate for temperature-imluced variations in size of the balance wheel.

1. In a balance wheel, a member having a low co-eflicient of expansion provided with a. lurality of resistant spokes, a yielding memlier having a high co-eflicient of expansion interposed between each pair of neighboring spokes in such a manner that the said spokes will move only within the limit of movement of their own inherent expansion or contraction and whereby the resistance of the said spokes will cause the yielding member by the latters own expansion or contraction to move in a predetermined path to compensate for temperature-induced variations in size of the balance wheel, and a weight carried by each of the said yielding members.

5. In a balance wheel, a member having a pardon, and comprising a bar, interposed be tween each pair of neighboring spokes in such a manner that the said spokes will move only within the limit of movement of their own inherent expansion or contraction and whereby the resistance of the said spokeswill cause the yielding member by the latters own ex pansion or contraction to move in a predetermined path to compensate for temperature induced variations in size of. the balance wheel.

6. In a balance wheel, a member having a low co-eflicient of expansion and provided with a plurality of resistant spokes, a yielding member having a high co-efiicient of expansion, and comprising a bar, interposed be tween each pair of neighboring spokes in such a manner that the said spokes will move only within the limit of movement of their own inherent expansion andcontraction and where by the resistance of the said spokes will cause the yielding member by the latters own expansion or contraction to move in a predetermined path to compensate for temperatureinduced variations in size of the balance wheel, and a weight connected to each bar between each pair of adjacent spokes.

7. In a balance wheel, a member having a low co-efiicient of expansion and provided with a plurality of resistant spokes, a yielding member having a high co-eflicient of expansion, consisting of a bar having a normal flex toward the center of oscillation interposed between each pair of neighboring spokes in such a manner that the said spokes will move only within the limit of movement of their own inherent expansion or contraction and whereby theresistance of the said spokes will cause the yielding member by the latters own expansion or contraction to move in a predetermined path to compensate for temperature-induced variations in size of the balance wheel.

8. In a balance wheel, a member having a low coelli'cient of expansion and provided with a plurality of resistant spokes, a yielding member having a high co-eiiicient of ex- )ftllSiOIl, consisting of a bar hafin a normal ex toward the center of oscillatlon, inter-' posed between each pair of neighboring spokes in such amanner that the said spokes will move only within the limit of movement of their own inherent expansion or contraction and whereby the resistance of the said spokes will cause the yielding member by the .la'tters own expansion or contraction to move in a predetermined path to compensate for temperati :e induced variations in size of the balance wheel, and a weight connected to each bar between each pair of neighboring spokes.

9. In a balance wheel, a member having a. low co-efiicient of expansion provided with a phirality of resistant spokes, and a yielding member, having a high co-eilicieht of expansion and of a length greater than the length of the individual spokes, interposed between each pair of neighboring spokes.

Signed by me this 31st day of January 1906.

FREDERIC ECAUBERT, Witnesses:

GEO. T. PINoKNEY, E. ZAGHARIASEN. 

